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| author | Thinh Nguyen <Thinh.Nguyen@synopsys.com> | 2020-02-04 05:05:32 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-24 09:00:33 +0300 |
| commit | e591d7ca6e9cd24bff5fcef70d65544585656488 (patch) | |
| tree | 2602c37146c211d740860c99cd0a240d424b5cb9 /drivers/usb/gadget | |
| parent | 03ee78583a9e1a7e52819a2f95ef6c9f70397dbb (diff) | |
| download | linux-e591d7ca6e9cd24bff5fcef70d65544585656488.tar.xz | |
usb: gadget: composite: Inform controller driver of self-powered
commit 5e5caf4fa8d3039140b4548b6ab23dd17fce9b2c upstream.
Different configuration/condition may draw different power. Inform the
controller driver of the change so it can respond properly (e.g.
GET_STATUS request). This fixes an issue with setting MaxPower from
configfs. The composite driver doesn't check this value when setting
self-powered.
Cc: stable@vger.kernel.org
Fixes: 88af8bbe4ef7 ("usb: gadget: the start of the configfs interface")
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/gadget')
| -rw-r--r-- | drivers/usb/gadget/composite.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 5a4cf779b269..c1f037af9702 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -850,6 +850,11 @@ static int set_config(struct usb_composite_dev *cdev, else power = min(power, 900U); done: + if (power <= USB_SELF_POWER_VBUS_MAX_DRAW) + usb_gadget_set_selfpowered(gadget); + else + usb_gadget_clear_selfpowered(gadget); + usb_gadget_vbus_draw(gadget, power); if (result >= 0 && cdev->delayed_status) result = USB_GADGET_DELAYED_STATUS; @@ -2281,6 +2286,7 @@ void composite_suspend(struct usb_gadget *gadget) cdev->suspended = 1; + usb_gadget_set_selfpowered(gadget); usb_gadget_vbus_draw(gadget, 2); } @@ -2309,6 +2315,9 @@ void composite_resume(struct usb_gadget *gadget) else maxpower = min(maxpower, 900U); + if (maxpower > USB_SELF_POWER_VBUS_MAX_DRAW) + usb_gadget_clear_selfpowered(gadget); + usb_gadget_vbus_draw(gadget, maxpower); } |